Barber-chair.



No. 722,439. v PATENTED MAR. 10, 1903.

F. H.'I"WILSD`0RF.

' BARBER GHAIR.'

APPYLloATIoN I ILIzD SEPT. e, 1902.

, N0 MODEL.

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UNITED STATES PATE Fries.

FRANK H. WILSDORF, OF ST. LOUIS, MISSOURI, ASSIGNOR TO AUGUST KERNBARBER SUPPLYv COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION.

j BARBER-CHAIR.

SPECIFICATION forming part of Letters Patent No. 722,439, dated March1o, 190e.

n Application iiled September 6,1902. Serial No. 122,361. (No model.)

To @ZZ wh/m, it muy concern;

Be it known that I, FRANK'H.' WILsDoRE, a citizen of the United States,residing in the city of St. Louis, in the State of Missouri,

have invented certain new and useful Improvements in Barber-Chairs, ofwhich the following is a full, clear, and exact description, referencebeing hadto the accompanying drawings, forming kpart of this specificarotion.

My invention relates to a device for holding the back and foot rests ofa barber-chair in any position to which they may be adjusted, and iswell adapted for use in connection with such a chair as is shown anddescribed in Letters Patent ofV the United States No. 683,309, issuedSeptember 24, 1901, to the August Kern Barber Supply Company as assigneeof John B. Lowry. My invention,

2o however, is capable of being used in connection With other styles ofbarber-chairs.

The invention consists inV features of novelty hereinafter fullydescribed, and pointed out in the claims.

z5 Figure I is a side View of a barber-chair such as is shown in thepatent referred to and in connection with which my invention is shown.Fig. II is an enlarged detail view, part in elevation and part invertical section.

3o Fig. III is a horizontal section takenon line III III, Fig. II. Fig.IV is a perspective view of the locking-plate of my attachment. Fig. Vis a perspective view of the locking-Wedge. Fig. VI is a perspectiveView of the locking- 3 5 collar.

It is of vital importance for a barber-chair to have a simple andeffective means for holding the back and foot rests in any position towhich they may be adjusted. Many barbers do not care especially for, andmany of them do not even use, the locking mechanism provided to preventthe horizontal rotation of the chair when it has been adjusted or turnedto a particular position; but they all want al 'secure lock to hold theback and foot rests to their adjusted positions, inasmuch as anymovement of the occupant causes, in the absence of a lock, a change inthe adjustment of these parts; and it is the object of my in- 5o ventionto supply a simple and effective lock for this purpose.

Referring to the drawings, 1 represents the base of the chair; 40, thefoot-rest; 9, the seat; 41, the locking rod or stem; Y4.2, the link thatconnects the stem to the foot-rest, and 25 the 55 operating-lever,secured to a rock-shaft 23. All of these parts are shown and describedin the patent referred to, Where they are designated by thesame numeralsas herein used.

To the shaft 23 is keyed a collar 3, provided 6o with a cam 4. f

5 represents the back of the chair, pivoted to the seat, to which thefoot-rest is also pivoted. The back and foot rests are connected to eachother bythe arm-rests in the usual manner. i

The seat 9 rests upon the upper end of the inside cylinder 7 of thepatent referred to, and to the upper end of this cylinder is secured alocking-plate 8 by means of screws 10 or other- 7o Wise. Projectingoutwardly from this plate are three fixed lugs orprojections 11, 12, and13, through which the locking rod or stem passes. Surrounding thelockingrod or stem at the lug 13 is a set-screw or nut 14, that has 75threaded connection with the lug. Surrounding the locking stern or rodat the lug 12 is a cone-shaped split collar 15, and straddling thelocking rod or stem'at the lug 11 is a wedge 16. The lug 11 has inclinedshoulders 17, 8o

Aagainst which the inclined face 18 of the wedge bears, and the straightface 19 of the Wedge bears against the inner and smaller end of thelocking-collar 1 5, as shown in Figs. II and III. The upper end of theWedge 16 85 is formed on an inclination, as shown at 20, and its forwardupper corner is provided with a stop-lug 21. One side of thelocking-collar 15 is slit throughout its length, While the other sidehas an uncut portion 22, so that 9o the two parts of the collar are heldunited. Between the outer and larger end of the locking-collar and theinner end of the adjustingnut 14 there is located a spring 24, thetendency of which is to force the locking-.wedge 95 inwardly, and thetension of the spring (which may be regulated by the set-screw 14) issufIicient to cause the locking-collar to clamp the rod or stem 41 withsufficient force to'liold the back and foot rests of the chair in anyposition roo to which they may be adjusted. The cam 4 is located overthe upper inclined end of the wedge 16, and whenit is desired to loosenthe rod 41 to change the position of the back and foot rests theoperating-lever 25 is moved in the direction of the arrow in Fig. I,thereby causing the cam 4 to press downwardly on the wedge 16, theeffect of which is to move the locking-collar 15 outwardly in the lug 12against the pressure of the spring 24. When the collar is thus moved,the rod or stem 41 is released and the back and foot rests of the chaircan be changed to the desired position, and when the lever 25 is thrownforward again the spring 24 will act automatically to force the collar15 inwardly, the Wedge rising automatically under the pressure of thespring when the cam 4 leaves it.

The device provides a simple, inexpensive, durable, and effective lockfor holding the back and foot rests to any desired adjustment, and thereis little or nothing about the device that is liable to get out oforder.

I claim as my invention- 1. In a lock for barber-chairs, the combinationof the foot-rest a rod or stem connected to the foot-rest, a fixed platehaving lugs through which said rod passes, a split coneshapedlocking-collar surrounding said rod and fitting within one of said lugs,a spring adapted to force said collar forward and clamp it to said rod,a wedge fitted in another of said lugs, and means for moving the wedgeto move said collar against the pressure of said spring to release saidrod, substantially as set forth.

2. In a lock for barber-chai rs, the combination of the foot-rest a rodor stem connected to the foot-rest, a Xed plate having lugs throughwhich said .rod passes, a split coneshaped locking-collar surroundingsaid rod and fitting in one of said lugs, an adjustingnut surroundingthe rod and tapped within another of said lugs, a spring located betweensaid nut and collar, a wedge straddling said rod and bearing againstanother of said lugs, and means for moving said wedge, all substantiallyas and for the purpose set forth.

3. In alock for barber-chairs, the combination of the foot-rest a rod orstem connected to the footrest, a'iixed plate having lugs through whichsaid rod passes, a split coneshaped locking-collar surrounding said rodand fitting within one of said lugs, an adjusting -nut surrounding saidrod and fitting Within another of said lugs, a spring located betweensaid nut and collar, a wedge iitted against another of said lugs andadapted to bear against the smaller end of said collar, p

and a rock-shaft provided with a cam and lever for moving said Wedge,all substantially as and for the purpose set forth.

4. In a lock for barber-chairs, the combination of the foot-rest a rodor stem connected to the foot-rest, a Xed plate having lugs throughwhich said rod passes, a split coneshaped locking-collar surroundingsaid rod, and fitting within one of said lugs, an adjustment-nutsurrounding said rod and tapped into another of said lugs, a springlocated between said nut and collar, a wedge straddling said rod andhaving a straight forward face bearing against the end of said collar,an inclined top and an inclined back face bearing against inclinedshoulders on another of said lugs, and a rock-shaft provided with anoperating-handleand with a cam adapted to bear against the upperinclined edge of the wedge, all substantially as and for the purpose setforth.

5. In alock for barber-chairs, the combination of the foot-rest, a rodor stem connected to the foot-rest,a spring-pressed,coneshaped,locking-collar surrounding said rod, a wedge straddling said rod andadapted to' force said collar in the opposite direction to that in whichit' is forced by the spring, means for supporting said collar and wedgeand coperating with said parts to obtain a locking and a releasingeffect, and means for moving said wedge, substantially as set forth.

6. In a lock for barber-chairs, the combination of the foot-rest, arodor stem connected thereto, a cone-shaped locking-collar surrounding thesame, a spring bearing against the same, an adjustment-nut for thespring, a Wedge fitting over said rod, means for supporting said nut,spring, collar and wedge, and means for moving said wedge, allsubstantially as and for the purpose set forth.

FRANK H. WILSDORF.

In presence of- E. S. KNIGHT, M. P. SMITH.

